One of the things that makes Lucid Air promising, to my eyes, is how much of their technology is designed in house, obviously that's a lesson taken from Tesla, but its a lesson many other automakers seem stubborn to learn. As Tesla has shown, that kind of vertical integration is what makes it possible to improve tech on the manufacturing line as soon as an improvement is viable, rather than waiting for a new model year and new equipment, as well as OTA updates that are substantial engine and battery improvements, rather than simple software changes that most automakers are limited to. Lucid Air in general seems to be one of the first companies coming along to actually try and evolve the EV, instead of just making a heavy ICE vehicle that takes advantage of some extra torque. Even Rivian, another EV company which I'm also excited about, is still taking a fairly conventional approach. Lucid has (claimed) to improve the volt architecture, the battery pack (which they've been in development with Formula E on for a while), the motors, which are spec'd out to be incredibly powerful especially for the size and weight they are claiming they'll come in at, and the crazy drag rating that was mentioned above, and all done in-house. I think when/if it comes out it'll be a real exciting entry to the market.
That said, the big knock against it is it'll probably also be 4-5 years too late. By the time it comes around, it'll not only be the 400 mile Tesla that's already out there, but VW, Audi, BMW, Porsche, Jaguar, Mercedes, all will likely have some version of an EV luxury sedan. Luxury sedans already kind of a niche market, and for EVs it looks like it'll quickly become a more crowded one.